Chuck for nailing-machines



Patented Mar. 2|, I899.

No. 62l,692.

H. W. MORGAN. CHUCK FOB NAILING MACHINES.

(Application filed Sept. 9, 1898.)

(No Modal.)

. I n'ventor.

i Q. 4/ s /0/ H e s 16 film. 7. M

UNITED STATES PATENT OFFICE.

HENRY'W. MORGAN, OF ROCHESTER, NEW YORK.

CHUCK FOR NAlLlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 621,692, dated March21, 1899. Application filed September 9,1898- Serial No. 690,586. (Nomodel.)

To aZZ whom it may concern:

Be it known that I, HENRY W. MORGAN, of

Rochester, in the county of Monroe and State Y ence marked thereon.

The object of my present invention is to provide a chuck or holder fornails adapted to be applied to box-nailing machines that shall be smalland compact and so constructed that the nails may be easily removed fromthe chuck by the fingers, if desired, without the aid of tools, when twoor more become clogged or if for any other reason it is deon the frame.

sired to remove the nail before the descent of the driver.

To these and other ends my invention consists in certain improvements inconstruction and combination of parts, all as will be clearly described,and pointed out in the claims at the end of this specification.

In the drawings, Figure 1 is a perspective view of the chuck; Fig. 2, avertical sectional view; Fig. 3, a horizontal sectional View, and Fig. 4aperspective view of one of the jaws.

Similar numerals in the different figures indicate similar parts.

In the present embodiment of my invention I have adapted the chuck to beapplied to box-nailing mechanisms in which the nails are fed to thechuck automatically and of the class shown in Letters Patent No.587,321, granted to me August 3, 1897.

The nail-chucks are adapted to be adj ustably mounted on the parallelbars 1, forming part of the stationary frame of the machine, and forthis purpose the rear side of the chuck-body 2 is provided with therecesses, between which is a rib 3, adapted to extend between the barand provided with a threaded stud 4., having the nut 5 and washer-plate6 to secure the chuck in any desired position The driveror punch 7extends through an aperture in the top of the chuckbody and centrallybetween the upper ends of the spring-operated jaws 8.

9 indicates a chamber formed by recessing the proximate faces of the twojaws and 1 connected by-any suitable conduit with the.

nail-feeding mechanism. The jaws are provided upon their upper ends withpivot pins or studs 11, engaging in slots 12, formed in the sides of thechuck-body, and upon their lower ends with similar pins 13, contactingwith the sides of the chuck when the jaws are closed. A leaf-spring 14,secured at the center by a screw to the chuck-body, overlaps the upperand lower pins 11 and 13, holding the former in engagement with theslots and by pressure on the latter keeping the jaws normally closed. Bythis construction nails that become clogged or that are imperfect can beeasily removed by simply separating the jaws with the hands, whenthenails, being released, will drop out of the passage. The upper portionof the chuck-body extends forward over the upper ends of the jaws, asshown, to prevent their longitudinal movement or accidentaldisplacement.

15 indicates angular grooves arranged in the lower proximate faces ofthe jaws and adapt-ed to center and guide the nails before entering thematerial into be driven.

The operation will now be understood. The chucks 2 having-been adjustedand secured on the bars 1 and. the nails passed into the which they areto chamber 9 below the driver or punch 7, the

latter descends, forcing the nail downward, the grooves 15 centering andguiding it into the material. As the punch descends the jaws areseparated at their lower ends, turning slightly on the pivots 11 toallow the nails and punch to pass through. When two nails becomeclogged, or in case of the clogging of an imperfect nail, or if for anyother reason it is desired to remove a nail, the operator separates thejaws with the hands sufficiently to allow the nail or nails to drop outof the chamber.

By this construction embodying the pivoted jaws forming the face of thechuck I am enabled to provide one that is comparatively small in sizeand very narrow, thereby allowing a greater. number to be mounted upon amachine and closer nailing to be done at a single operation of thedriving mechanism.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent of the United States, is v 1. The combinationwith the chuck-body having the nail and driver passages, of the jaws onthe face thereof pivoted to the body and having the chamber betweenthem.

2. The combination with the chuck-body having the nail and driverpassages, of the jaws on the face thereof provided with the chamber orrecess between them and abutting at the forward edges.

3. In a nail holder or chuck the combination with a chuck-body havingthe nail and driver passages, of the pivoted jaws on the face of thechuck having the pivot-pins in their upper ends engaging in slots in thesides of the chuck-body and a chamber between said jaws connecting withthe nail-passage in the chuck-body. 4. In a nail-chuck the combinationwith the chuck-body having the nail and driver passages, and the slotsor recesses at the sides, of the jaws on the face thereof havingpivotpins at their upper ends lying in the slots in the sides of thechuck-body and springs for holding the pivot-pins in the slots.

5. In a nail-chuck the combination with a chuck-body having the nail anddriver pasdriver-passage arranged between the jaws above the chamber;substantially as described.

6. In a nail-chuck the combination with a chuck-body'of the jaws on theface thereof provided with the chamber in their lower ends, thedriver-passage above the chamber and the grooves or guidingaperturesleading from the chamber arranged in the lower proximate faces of thejaws; substantially as described.

7. In a nail-chuck the combination with a chuck-body having the nail anddriver passages, of the laterally-swinging jaws on the face thereof,pivoted at their upper ends and provided with the chamber anddriver-passages, of the spring holding the pivots in place and the jawsnormally closed; substantially as described.

8. In a nail-chuck the combination with a chuck-body having the nail anddriver passages and the slots or recesses at the sides thereof, of thelaterally-swinging jaws having pivoted and stop pins at their upper andlower ends respectively, of the leaf-springs secured at their centers tothe chuck-body and overlapping with their ends the pins upon theopposite ends of the jaws; substantially as described.

HENRY W. MORGAN.

Witnesses: F. F. CHURCH,

G. WILLARD RICH.

